Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2021-43798

Grafana path traversal

Grafana · >= 8.0.0, < 8.0.7

Watch CVE-2021-43798 Browse KEV feed
Severity
CVSS 7.5 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
88.5%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-43798 is an unauthenticated Grafana path traversal. Grafana is an open-source platform for monitoring and observability. Grafana versions 8.0.0-beta1 through 8.3.0 (except for patched versions) iss vulnerable...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

grafana >= 8.0.0, < 8.0.7.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Grafana is an open-source platform for monitoring and observability

Grafana is an open-source platform for monitoring and observability. Grafana versions 8.0.0-beta1 through 8.3.0 (except for patched versions) iss vulnerable to directory traversal, allowing access to local files. The vulnerable URL path is: `/public/plugins//`, where is the plugin ID for any installed plugin.

At no time has Grafana Cloud been vulnerable. Users are advised to upgrade to patched versions 8.0.7, 8.1.8, 8.2.7, or 8.3.1. The GitHub Security Advisory contains more information about vulnerable URL paths, mitigation, and the disclosure timeline.

grafana Affected
grafana
>= 8.0.0, < 8.0.7 >= 8.1.0, < 8.1.8 >= 8.2.0, < 8.2.7 = 8.3.0
Published
07 Dec 2021
Exploitation Reported
01 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 01 Jun 2026

A trusted third party reported exploitation.

Proof of concept available

GitHub

Recorded 07 Dec 2021

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CVE First 2026-06-01 10:41 UTC
CISA 2026-06-02 14:05 UTC
The Shadowserver 2026-08-18 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-43798.yaml 25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.5 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

88.5%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22

All CVSS Scores

CVSS v3.1 7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 5.0 Medium

AV:N/AC:L/Au:N/C:P/I:N/A:N

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

pedrohavay/exploit-grafana-CVE-2021-43798

github · Created 2021-12-11 18:49:30 UTC · 40 stars · AI assessment 85%

This is a proof-of-concept exploit for Grafana's Unauthorized Arbitrary File Read Vulnerability (CVE-2021-43798).

Mr-xn/CVE-2021-43798

github · Created 2021-12-07 12:47:58 UTC · 25 stars · AI assessment 85%

CVE-2021-43798:Grafana 任意文件读取漏洞

jas502n/Grafana-CVE-2021-43798

github · Created 2021-12-07 09:02:16 UTC · 358 stars · AI assessment 85%

Grafana Unauthorized arbitrary file reading vulnerability

taythebot/CVE-2021-43798

github · Created 2021-12-06 20:10:23 UTC · 37 stars · AI assessment 90%

CVE-2021-43798 - Grafana 8.x Path Traversal (Pre-Auth)

Grafana v8.x - Arbitrary File Read

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 00:00 UTC

    KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  2. 14:05 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 10:41 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  4. 00:00 UTC

    Nuclei template available

    Scanner coverage available

  5. 18:25 UTC

    CVE published

    Vulnerability disclosed publicly

  6. 20:10 UTC

    Public PoC available

    Public proof-of-concept code published

  7. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2021-43798

Sample API response 
{
  "cve_id": "CVE-2021-43798",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.88503,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}